Electric water heatek



wfJ. HAMMERs ELECTRIC WATER HEATER Original Filed Aug.

Aug. 25, 1931.

noen ox ere Reissuecl u'g. 275, 1931 UNITED STATES WILLIAM J. HAMMERS, OF GRAND RAPIDS, MICHIGAN .ELECTRIC WATER HEATER Original No. 1,656,518, dated January 17, 1928, Serial No. 130,8;77, led August 23, 1926.` Application fer reissue led January 14, 1930.

This invention relates to an electric water heater. It is an object and purpose of the present invention to provide a heater for water wherein heat may be supplied to the D water through an electric agency wherein a short circuited secondary winding has electric currents induced therein by reason of its proximity, location and coupling with respect to primary windings and the cores around 10 which they are located and by reason of the current induced, said secondary short cir- -cuited winding is heated to a high degree of temperature. Through this short circuited Winding the water circulates and absorbs the .15 heat thus lproduced whereby the water is heat- Fig. 1 is a side elevation of a water tank p s-c equipped with the heating unit of my inventlon.

Fig. 2 is an enlarged vertical section through the heating unit.

Fig. 3 is an enlarged horizontal sectlon r B5 therethrough, and

4 is a fragmentary enlarged vertical section through the central portion of the heating unit, the plane of the section being at right angles to the plane of the section shown in Fig. 2.

Like reference characters refer to like parts in the different figures of the drawings.

The tank 1 for holding the hot water is of usual construction and is supported by the usual standard 2 at its lower end. It is equipped with an inlet pipe 3 at its upper end and also with an outlet pipe 4 through which the water may be drawn from the tank.

A pipe 5 branches laterally from the outy let pi e 4 and leads to and connects with a cylin er 6 at the upper end thereof. In-

Serial No. 420,780.

tegrally cast with the vertical cylinder Gis i an inner vertical -wall 7 substantially square lin cross section, the upper ends of the wall Aof the cylinder 6 follows thepartition around lthe inner wall 7 several times before reaching the opposite end. A pipe 10 is connected at one end at the lower end of the outer cylinder 6 and at its opposite end is connected with the bottom of the tank l. As will hereafter be described the water is heated in the receptacle made by the cylinder 6,' with inner wall 7 and closed ends 8, circulating through the same as impelled by the spiral partition 9, ,the Water. passing from the lower end of the tank 1 upwardly through the pipe 10, thence upwardly as guided by the spiral partition 9 'to the upper pipe 5 and thence to the upper end of the tank 1 so thatv water drawn outwardly through theoutlet pipe 4 will be of the highest temperature that any portion of the water in the tank has attained.r

Across the upper end of 4the water heating receptacle a sectionV of a core 11 is placed. This core is made of a plurality of laininations riveted or Votherwise securely fastened together and depending from which is a central leg 12 and two end legs 13. The leg 12 passes into the upper end of the space surrounded by the wall 7 and extends substantially half way therethrough. A similar core 11a made up of a plurality ofY lamination's is located across the lower end of the water heating receptacle and similarly has a central upwardly extending leg 12a and two end legs 13a, theleg 12a extendinginto the lower end of the space surrounded by the wall 7 and at its upper end abutting against the lower end of the leg 12, Whilethe legs 13a abut at their upper ends against the lower ends of the legs 13, as best shown in Fig. 2. Around those portions of the core formed of the abutting legs 13 and 13a coils 14 are placed. These coils may be considered primary coils Vand m0 through them an alternating electric current 'i .i is'to be considered com is designed to be passed. The coils are spaced a short distance from the outer sides of th cylinder 6.

Two clamping rings 15 are located around the tank 1 in spaced apart relation, each at one side carrying an outwardly extending arm 16, the upper .one of whichv seats in arecess cut inthe upper side of the' core 11 while the lower seats in a corresponding recess cut in the lower side ofthe-core 11a. w this means the two core sections are maintained in xed relation with respect to each otherandtothe water heating receptacle and serve also to rtthe umt. lcctrlc current passed through the coils v 1,4 induces current 1n the heati receptacle of the c linder 6 wi the inner (,ends 8 and t e artitions'9. vSuch inc'nrrents are of gh amperage and by of theintegral structure of this water y receptacle are short circuited so that he same How Vthrou short circuits 'thereby thel reduction of a considerable heat '.Ymflie water eating member described. This lieatistransmitted to the water which is within the same and as the temperature of the wider increases lit flows upwardly directed guided by ithe Apartition 9, passing outwardly 'through the pipe 5 and being re- ',lacedby fresh colder water coming into the .1 Il f. th the lbverlend of 'the 'ta The construction is relatively simple, practcilnd durable and e'icientin service. It constructed and thorougy tried tested and with it water may? heated fa of lconsumption of electric curentjand a consequent minimum of cost. 'Hic 'invention is dened 'in "the aplpelrllded pre sive 0f all orms of structure coming within their scope.

L clam: 1L Tn combination, a waterheating member y with on outer shell., an inner 'hollow and 'l ends connecting the ends ffsaid shell "and wall, an inlet and an outlet attire respective ends of said water heating acorelocated around said water ing member having a-middle vertical porinpassing through said hollow wall and end vertical Yportions parallel with and from the sldes of the outer shell, and

coil windings around said end vertipo ion's of the core. j '2. A water heater comprising a receptacle V.an outer shell, an inner hollow wall 'tllro o and spaced from the shell connect' the ends of the f shell, an ogn laminated core havortion exten' g through the hollow ,.)rallorthe receptacle, a second :i parallel to and-outside of the shell, portions between the said I named portions, and a primary coil tioned portion Windinv around `said second portion of th core, substantially as described.

3. A constructlon containing the elements in combination defined in claim 2, combined with an inlet pipe leading into one end of said receptacle an outlet pipe leadin from the other end thereof, and 4an "integra ,spiral partition located between the shell and inner wall leading from one pipe to the other.

4. In combination, a vertical water heating member comprising, an outer shell, an `inner hollow vertical wall extending through said shell and ends integral with and connecting the ends of the shell and wall, an'inlet and an outlet at the respective ends of said member, a s iral Y rtition between the said shell and wa l lea ing from one of said openings to the other, a core formed of two sections, one located over the upper end Vof said member and the other located under the lower end thereof, said cores havi intermediate legs pro`ecting toward eac other through the opening surrounded by said inner wall, and end legs extending toward each other at opposite outer sides of the said shell and primary coil windings around said end legs of the sections of the core spaced a short distance from the adjacent sides of said outer shell.

5. A construction containing the elements s in combination, defined in claim 4, combined with a tank located adjacent said waterheating member and members attached lto the tank and extending one over the upper section of the core and the other under the lower section thereof to thereby support said core sections and hold the same together.

6. A heater comprising a vertically posirimary coil in an electric circuit, a vertically positioned secondary coil associated therewith to receive an induced electric circuit 'from said primary coil, said secondary coil com rising a continuous conduit having inlet an outlet openings at its lower and upper ends respectively and consisting of a plurality of turns, each turn being electrically short circuited, and a conduit'connectngthe ends of the secondary coil, said 'seconda coil and conduit having a liquid of higli heat receiving-capacity therein. 115

7. In combination, a water heating member formed of a hollow element extending in a loop portion, said loop portion having one end slightly lower than the other end, a laminated core located around said Water heating member, said core having a vertical rportion passing through said loop portion and another vertical portion spaced from the said first vertical portion, horizontal portions connecting the respective ends of the vertical portions, a primary coil winding aroundVV the second mentioned vertical portiony and means extendi across the said loop portion to short circult the same.

48. heater of the class described com- .30

prising a core of loop construction, a primary coil located around the core immediately adacent thereto, a secondary coil unit encirc ing the core at a point spaced from the primary coil, said seconda coil unit comprising a Huid conduit exten ing around the core, means to short circuit the fluid conand means to supply the conduit with In testimony whereof I ax my si ature.

1 vWILLIAM J. HA Rs. 

